Patents by Inventor David A. Benson

David A. Benson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5302392
    Abstract: A polyurethane composition has particles of solid polyvinylpyrrolidone-iodine complex evenly distributed throughout the polyurethane matrix so that the complex does not associate with the polyurethane to any appreciable extent. In one embodiment of the composition, the polyurethane is thermoplastic for coating or molding applications. In another embodiment, the composition is a polyurethane foam particularly useful as a sponge for scrubbing which provides almost instantaneous release of the complex. The sponge may be provided in a package which includes other items useful for scrubbing.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: April 12, 1994
    Assignee: Becton, Dickinson and Company
    Inventors: Mutlu Karakelle, C. David Benson, Robert A. Taller, Min-Shiu Lee, Mohammad A. Khan
  • Patent number: 5092858
    Abstract: A device is provided for deliberately distributing simultaneously over the entire vertical and/or longitudinal extend of a body of aqueous containing liquid a gelation agent for the rapid containment of contaminated aqueous liquids. The device is an elongated rigid or semi-rigid body for containing an envelope or package of material immediately dissolvable in the aqueous liquids, and which contains the gelling agent prior to liquid exposure. The device includes means for exposure of its content to the liquid, once the device is positioned in or is surrounded by the liquid. The invention contemplates a conventional suction canister having the device positioned therein for receiving contaminated body fluids.
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: March 3, 1992
    Assignee: Becton, Dickinson and Company
    Inventors: C. David Benson, Mutlu Karakelle, Robert A. Taller
  • Patent number: 4976200
    Abstract: A tungsten bridge device for the low energy ignition of explosive and energetic materials is disclosed. The device is fabricated on a silicon-on-sapphire substrate which has an insulating bridge element defined therein using standard integrated circuit fabrication techniques. Then, a thin layer of tungsten is selectively deposited on the silicon bridge layer using chemical vapor deposition techniques. Finally, conductive lands are deposited on each end of the tungsten bridge layer to form the device. It has been found that this device exhibits substantially shorter ignition times than standard metal bridges and foil igniting devices. In addition, substantially less energy is required to cause ignition of the tungsten bridge device of the present invention than is required for common metal bridges and foil devices used for the same purpose.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: December 11, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: David A. Benson, Robert W. Bickes, Jr., Robert S. Blewer
  • Patent number: 4700629
    Abstract: Optical energy, provided from a remote user-operated source, is utilized to initially electrically charge a capacitor in a circuit that also contains an explosion initiating transducer in contact with a small explosive train contained in an attachable housing. Additional optical energy is subsequently supplied in a preferred embodiment to an optically responsive phototransistor acting in conjunction with a silicon controlled rectifer to release the stored electrical energy through the explosion initiating transducer to set off the explosive train. All energy transfers between the user and the explosive apparatus, either for charging it up or for setting it off, are conveyed optically and may be accomplished in a single optical fiber with coding to distinguish between specific optical energy transfers and between these and any extraneous signals.
    Type: Grant
    Filed: May 2, 1986
    Date of Patent: October 20, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: David A. Benson, Glenn W. Kuswa
  • Patent number: 4638665
    Abstract: A bending machine is provided to form a multiplicity of predetermined types of bends within several planes in elongated, heavy gauge workpieces of various sizes and shapes by pressure between a stack of dies and a pair of swingable anvil plates carried by elongated wings each of which is, in turn, swingable to adjust the distance between the anvils. Slide rails for the workpiece are readily accessible for loading and unloading. The die stack includes releasable vise-like clamps which grip the workpiece to preclude distortion during bending, and the stack can be raised or lowered to provide proper alignment of preselected die units of the stack.
    Type: Grant
    Filed: October 3, 1985
    Date of Patent: January 27, 1987
    Assignee: Full Vision, Inc.
    Inventors: David A. Benson, Ray A. Dilts
  • Patent number: 4019604
    Abstract: Apparatus is disclosed for elevating a platform of the type adapted to carry workers, tools, equipment and/or material. Parallelogram boom assemblies support the platform from a mobile frame such that the platform can be raised and lowered in a level attitude. Each boom assembly comprises a compression arm and a tension arm. The two boom assemblies are interconnected by means of a floating frame and a rigid tension member which is arranged to raise and lower the upper boom assembly relative to the floating frame as the lower boom assembly is raised and lowered, respectively, relative to the mobile frame. In one embodiment the upper and lower boom assemblies lie in a horizontal orientation when in their retracted mode. In another embodiment an upstanding support carries the lower boom assembly which inclines downwardly in the retracted position and connects through a floating frame with an upper boom assembly which is formed with a zigzag shape.
    Type: Grant
    Filed: June 16, 1975
    Date of Patent: April 26, 1977
    Assignee: Fabtek, Inc.
    Inventor: Lyman David Benson